ADM487E: 5 V, 128 Nodes, ±15 kV ESD-Protected, 250kps Half-Duplex Transceiver
The ADM485E/ADM487E/ADM1487E are 5 V low power data transceivers with ±15 kV ESD protection suitable for halfduplex communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with TIA/EIA standards RS-485 and RS-422. The ADM487E and the ADM1487E have a 1/4 unit load receiver input impedance that allows up to 128 transceivers on a bus, while the ADM485E allow up to 32 transceivers on a bus. Since only one driver is enabled at any time, the output of a disabled or powerdown driver is three-stated to avoid overloading the bus.
The driver outputs are slew rate-limited in order to reduce EMI and data errors caused by reflections from improperly terminated buses. Excessive power dissipation caused by bus contention or output shorting is prevented with a thermal shutdown circuit. The parts are fully specified over the industrial temperature ranges and are available in 8-lead SOIC packages
产品应用领域 Applications
- Energy/power metering
- Lighting systems
- Industrial control
- Telecommunications
- Security systems
- Instrumentation
ADM487E 特点
- TIA/EIA RS-485/RS-422 compliant
- ESD protection on RS-485 I/O pins
- ±15 kV human body model
- Data rates: 250 kbps
- Half-duplex options
- Reduced slew rates for low EMI
- -7 V to +12 V common-mode input range
- Thermal shutdown and short-circuit protection
- 8-lead SOIC packages
ADM487E 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADM487EARZ | 量产 | 8 ld SOIC | 8 | 工业 |
| ADM487EARZ-REEL7 | 量产 | 8 ld SOIC | 8 | 工业 |
| ADM487EWARZ | 量产 | 8 | 工业 | |
| ADM487EWARZ-REEL7 | 量产 | 8 | 工业 |